Why is my Wacom Intuos tablet not detected?

Im running Ubuntu 13.10, I downloaded the kernel driver v0.20 and followed instructions from Linux Wacom SourceForge Project, and my CTL-480 is working flawlessly.

EDIT: According to this forum post new drivers that support this device were released a few weeks ago. I don't know what the status on these drivers is in Ubuntu yet but they have turned up in ArchLinux and some other places and you can always install them manually while you wait on distro releases.

The CTL-480 tablet is not supported by the currently released wacom input driver for Linux. Support for the model has been added to the code base and is expected to be in the 0.20 version of the driver (0.19 is current as of this writing). Device IDs and other things have also been submitted to the linux kernel so that they are properly recognized in the future.

I don't have an ETA for support, but expect this to work out of the box in the coming months.

In the mean time it will only work if you manually compile the drivers after applying the various patches submitted for supporting this model.